Structural Formula:A structural formula is a graphical representation of the molecular structure of a chemical compound, showing how the atoms are arranged and connected by chemical bonds.
Line-Angle Formula: A line-angle formula is a type of structural formula where chemical bonds are represented by line segments, and the angles between the lines indicate the geometry of the molecule.
Skeletal Formula: A skeletal formula is a simplified structural formula that represents carbon atoms as line segments and omits hydrogen atoms, focusing on the carbon skeleton of the molecule.